"Stop it!" she giggled, pulling her bottom lip from the gentle grip of his teeth. "My parents could come in at any moment!"
He quirked and eyebrow and leaned in as close as he could get, his eyes smoldering. "I don't think they-" He felt as though someone was watching him and turned around to see Rory, leaning against the door frame, shaking his head in a disapproving manner.
"How dare you, Doctor? How dare you besmirch my daughter's honor like that?" His stern, parental expression didn't last long before a smile broke through. He walked over, Amy close behind, arms wide open.
"Hello, Dad!" River grinned. "Mum!" The Doctor smiled as the Ponds embraced, trying to figure out where they were in the timelines. Amy scolded him for not telling her right away that he'd picked up River.
"Pond, you're acting like my mother-in-law!" he whined dramatically, smirking at her and winking. Her face was completely deadpan. She still didn't like the idea that she was a mother-in-law at all, let alone the Doctor's. Rory, on the other hand, found the situation amusing. He poked fun at the Doctor and River's relationship, pretending to be an overbearing, over-protective father.
The Doctor was quite upset that his time with River had been interrupted by a family reunion, but he couldn't help but smile when he saw the way Amy glowed when River was there. They had a unique bond. More than just a mother-daughter relationship. Rory leaned against a wall and glanced over at the Doctor. "Should we… erm… Leave you two alone?" he asked, rather awkwardly.
"Well, I wouldn't mind." He made that face: a sort of mocking indecision, hinting more towards 'YES, PLEASE'. "But how're you going to tear those two apart?"
"I've got this," Rory said in a rather cocky manner, sauntering over to Amy. He wrapped his arms around her from behind and rested his head on her shoulder. Half-way through one of her sentences, she caught her breath and turned bright red. Rory's lips were moving ever so slightly, hidden behind a curtain of fiery hair, whispering things not suitable for the faint of heart. He unwrapped his arms from her waist and took her hand, leading her out of the room with a look of shock still stuck on her face. Rory flashed a thumbs-up to the Doctor before darting out of view.
River turned back to the Doctor, stalking towards him, trapping him against the wall. She ran her fingers through his hair and leaned in close. "Now where were we, sweetie?"
The Doctor failed to stifle an excited chuckle and whispered "Still got those handcuffs?"